River Level: River level is a measure of the depth of water in a river at a specific location.

River Flow: River flow is the volume of water moving past a point in the river during a specified time interval.

m^{3}/s (Cubic Metres per Second): A cubic metre per second is a standard measure of volumetric flow rate for rivers. The unit of m^{3}/s specifies how much water is moving past a point in the river at a specified time interval. For example, a reading of 1 m^{3}/s means that there is 1 cubic metre of water flowing past a point in the river each second. A cubic metre is a commonly used unit in hydrologic metric measures; 1 cubic metre is equivalent to 1,000 litres which is equal to 1 tonne.